Areca ARC-1110 User Manual

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chips, which can simultaneously communicate with the I/O proces-

sor and read or write data on multiple drives. 

As storage capacity requirements continue to rapidly increase, us-

ers require greater levels of disk drive fault tolerance, which can be 

implemented without doubling the investment in disk drives. RAID 

1 (mirroring) provides high fault tolerance. However, half of the 

drive capacity of the array is lost to mirroring, making it too costly 

for most users to implement on large volume sets due to dobuling 

the number of drives required. Users want the protection of RAID 1 

or better with an implementation cost comparable to RAID 5. RAID 

6 can offer fault tolerance greater than RAID 1 or RAID 5 but only 

consumes the capacity of 2 disk drives for distributed parity data. 

The 8/12/16/24-port RAID controllers provide RAID 6 functionality 

to meet these demanding requirements.

The SATA RAID controllers also provide RAID levels 0, 1, 1E, 3, 5 

or JBOD configurations. Its high data availability and protection is 

derived from the following capabilities: Online RAID Capacity Ex-

pansion, Array Roaming, Online RAID Level / Stripe Size Migration, 

Dynamic Volume Set Expansion, Global Online Spare, Automatic 

Drive Failure Detection, Automatic Failed Drive Rebuilding, Disk 

Hot-Swap, Online Background Rebuilding and Instant Availabil-

ity/Background Initialization. During the controller firmware flash 

upgrade process, it is possible that an error results in corruption of 

the controller firmware. This could result in the device becoming 

non-functional. However, with our Redundant Flash image feature, 

the controller will revert back to the last known version of firmware 

and continue operating. This reduces the risk of system failure due 

to firmware crashes.

The SATA RAID controller utilizes built-in firmware with an embed-

ded terminal emulation that can access via hot key at BIOS boot-

up screen. This pre-boot manager utility can be used to simplify 

the setup and management of the RAID controller. The controller 

firmware also contains a ArcHttp browser-based program that can 

be accessed through the ArcHttp proxy server function in Windows,